package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @author 衷岚
 * @version 1.0
 */
@Service
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    @Override
    public void add(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        category.setStatus(StatusConstant.DISABLE);
//        category.setCreateTime(LocalDateTime.now());
//        category.setUpdateTime(LocalDateTime.now());
//        Long createUser = BaseContext.getCurrentId();
//        category.setCreateUser(createUser);
//        category.setUpdateUser(createUser);
        categoryMapper.add(category);
    }

    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
//        category.setUpdateTime(LocalDateTime.now());
//        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.update(category);
    }

    @Override
    public void deleteById(Long id) {
        Integer count= dishMapper.countByCategoryId(id);
        //分类包含菜品，外键约束不能删除
        if(count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        count = setmealMapper.countByCategoryId(id);

        //分类包含套餐，外键约束不能删除
        if(count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        categoryMapper.deleteById(id);

    }

    @Override
    public void updateStatus(Integer status, Long id) {
        Category category = new Category();
        category.setId(id);
        category.setStatus(status);
//        category.setUpdateTime(LocalDateTime.now());
//        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.updateStatus(category);
    }

    @Override
    public List<Category> list(Integer type) {
        Category category = new Category();
        category.setType(type);
        List<Category> categoryList = categoryMapper.list(category);
        return categoryList;
    }

    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageResult pr = new PageResult();
        //分页插件
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());

        Category category = new Category();
        category.setType(categoryPageQueryDTO.getType());
        category.setName(categoryPageQueryDTO.getName());

        List<Category> categoryList = categoryMapper.list(category);
        Page<Category> page = (Page) categoryList;
        pr.setTotal(page.getTotal());
        pr.setRecords(page.getResult());
        return pr;
    }

    @Override
    public List<Category> findByType(Integer type) {
        List<Category> categoryList = categoryMapper.findByType(type);
        return categoryList;
    }
}
